Yamhill County, Oregon

Yamhill County
Yamhill County Courthouse in McMinnville
Location within the U.S. state of Oregon
Oregon's location within the U.S.
Coordinates: 45°14′N 123°19′W / 45.23°N 123.31°W / 45.23; -123.31
Country United States
State Oregon
FoundedJuly 5, 1843
Named afterYamhela people of the Kalapuya
SeatMcMinnville
Largest cityMcMinnville
Area
  Total
718 sq mi (1,860 km2)
  Land716 sq mi (1,850 km2)
  Water2.5 sq mi (6 km2)  0.3%
Population
 (2020)
  Total
107,722
  Estimate 
(2024)
110,886
  Density139/sq mi (54/km2)
Time zoneUTC−8 (Pacific)
  Summer (DST)UTC−7 (PDT)
Congressional district6th
Websitewww.co.yamhill.or.us

Yamhill County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 107,722. The county seat is McMinnville. Yamhill County was named after the Yamhelas, members of the Kalapuya Tribe.

Yamhill County is part of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area. It is in the Willamette Valley.